I do not think so, I think cash isn't really that much cared about anymore, why would you even need it, almost everything in life is done with digital currency and there is no need to have paper money anymore. I understand the logic to want it, but that doesn't mean that we are going to need it, those are two different things. In fact, what we are trying to achieve with crypto world is to make sure we can have a world where we spend bitcoin as well, which would be fully digital, and earn bitcoin too.

Like how El Salvador did it, turn bitcoin into a legal tender and using apps with each other we can earn and spend bitcoin without a trouble, go fully digital. That's going to be very hard, but one day it will be quite common for sure.